package cn.java63.biz;

public class UserService {
    public boolean add(User u){
        System.out.println("新用户"+u+"加入了数据库");
        return u.getId()%2==0;
    }
    public boolean update(User u){
        System.out.println("老用户"+u+"被修改了");
        return u.getId()%2==0;
    }
    public boolean del(long id){
        System.out.println("用户"+id+" 被删除了");
        return true;
    }
}
